Perhaps you should try some spelling variations:
pheromone complexity » performance complexity (Expand search), pheromone component (Expand search), pheromone components (Expand search)
routing python » using python (Expand search), routing path (Expand search), routing method (Expand search)
using routing » using routine (Expand search), nursing routing (Expand search), using rotating (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
coder » poder (Expand search), codes (Expand search), coded (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( coder pheromone complexity control program ) OR ( using routing python python programming ))~.